626.03 Construction Requirements.
accordance with the project specific design and manufacturer’s recommendations and requirements. The cable guiderail system will not be accepted by the Department until a satisfactory letter of compliance has been received.
624.04 Method of Measurement.
a.Cable Guiderail. The cable guiderail will be measured in linear feet {meters} exclusive of that length of guiderail which is within the limits of measurement for the guiderail anchors. Measurement will be made from center to center of the outermost transit ion posts. No separate measurement will be made of any cable, rail, post, offset block, concrete, hardware, or any other component of a cable guiderail.
b.Cable Guiderail Anchors. The cable guiderail anchors will be measured per each. An anchor will i nclude all components of the cable guiderail from the terminal post to the center of the outermost transition post. No separate measurement will be made of any intermediate anchors that may be required by the manufacturer to limit the deflection to the des ign value. No separate measurement will be made of any cable, rail, post, offset block, concrete, hardware, or any other component of a cable guiderail anchor.
624.05 Basis of Payment.
a.Unit Price Coverage. The contract prices for the cable guiderail a nd cable guiderail anchors shall be full compensation for submittals, soil sampling and testing, design of the anchors and sockets, all posts, foundations, hardware, materials, equipment, tools, labor, training, and incidentals necessary to complete the work. The contract price for Cable Guiderail shall also be full compensation for all intermediate anchors and for furnishing the manufacturer's recommended tension measuring device to become the property of the Department.
b.Payment will be made under Item No.: 624-A Cable Guiderail - per linear foot {meter} 624-B Cable Guiderail Anchor – per each CONCRETE MEDIAN STRIP
626.01 Description.
This Section shall cover the work of constructing a concrete median strip of the size, shape, and dimensions shown on the plans, at the locations, to the lines and grades shown on the plans or designated.
626.02 Materials.
All materials furnished for use shall conform to the requirements of Division 800, Materials, and Section 501.
626.03 Construction Requirements.
Concrete used in the construction of the median strip shall be Class A concrete complying with the requirements of Section 501, except that when the median strip is placed on concrete pavement, the concrete may be of the same type used in the pavement. The median strip shall be constructed on any approved surface, normally a subbase, base, or pavement layer. Forming, placing, finishing, and curing of the concrete shall be in accordance with the provisions of
Article 623 — 03.
Expansion joints shall be provided as specified in Subarticle 618.03(g) for concrete driveways, unless shown otherwise by the plans or directed by the Engineer.
626.04 Method of Measurement.
626.04 Method of Measurement.
Ordered and accepted concrete median strip will be measured either by linear measurement by the linear foot {meter} or volumetric measurement by the cubic yard {cubic meter} in accordance with the method of measurement designated by the pay item. Median strips on bridges will not be measured for payment, but the volume of concrete shall be included in the concrete volume for the bridge structure. Linear measurement of a median st rip shall be the actual length of the median strip measured along the center line of the strip. Volumetric measurement of a median strip shall be by the cross sectional average end area method unless a more accurate method of measurement is derived.
626.05 Basis of Payment.
a.Unit Price Coverage . The quantity of the Concrete Median Strip, measured as provided above, will be paid for at the contract unit price per foot {meter} or per cubic yard {cubic meter} for Concrete Median Strip, which price and payment shall be full compensation for furnishing all materials, equipment, tools, labor, and incidentals necessary to complete the work.
b.Payment will be made under Item No .: 626-A Concrete Median Strip - per linear foot {meter} 626-B Concrete Median Stri p - per cubic yard {cubic meter} SECTION 629 CONCRETE MEDIAN AND SAFETY BARRIER
629.01 Description.
This Section shall cover the work of constructing a concrete median or safety barrier at the location shown on the plans, proposal, or directed. Barriers shall be basically classified as to "Type" which will designate the size, shape, height, etc. all in accordance with details shown in the plans. Barriers may be cast in place, extruded by slip form equipment, or precast and installed in a permanent manner. This Section shall also cover the work of retrofitting concrete bridge rail in accordance with the requirements shown on the plans.
629.02 Materials.
All materials furnished for use shall conform to the appropria te requirements of Division 800, Materials, and the following: Concrete, unless otherwise specified by plan details, shall meet the requirements of Section 501 for Class A concrete. Steel reinforcement shall meet the requirements of Section 502.
629.03 Con struction Requirements.
a.General . The concrete mix, construction, placing of the concrete, curing, and finishing shall be in accordance with the appropriate provisions of Section 501, unless otherwise provided in this Section or noted in the plan detail s.
b.Excavation and Backfill . Excavation and backfill for permanent barriers shall be in accordance with the provisions of Section 214.
c.Slip Form Method . Barriers constructed by the use of a slip form extrusion machine shall be well compacted, dense concrete meeting all the requirements of Section 501, except for the requirement for fixed forms. The forming portion of the extrusion machine shall be readily adjustable vertically during the forward motion of the machine so that the top of the barrier can be maintained at the predetermined grade.
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 512–512 of 934.